どうしても (doushitemo): No matter what or simply cannot
～どうしても (doushitemo)
Meaning
No matter what; by any means; simply cannot
Formation and usage
どうしても + a strong wish or necessity. With a negative or negative potential verb, it means simply cannot despite effort.
Explanation
With an affirmative expression, emphasize a strong wish or necessity. With a negative, express inability despite effort. The negative use should not be translated as a simple determination to do something.
Examples
どうしてもこの展覧会を見に行きたいです。
I really want to see this exhibition, no matter what.
明日はどうしても会社に行かなければなりません。
I absolutely have to go to the office tomorrow.
何度読んでも、この文の意味がどうしても分かりません。
No matter how often I read it, I simply cannot understand this sentence.
昔の友達の名前がどうしても思い出せません。
I just cannot remember my old friend's name.
どうしても間に合わない場合は、電話してください。
If you really cannot make it on time, please call.
How related patterns differ
わざわざ emphasizes deliberate extra effort, whereas つい describes an unintentional action. ついでに means doing something else while at it; ず describes not doing an action. どうしても may express determination or inability despite trying.